Line 21 (Guangzhou Metro)
E835670
Line 21 of the Guangzhou Metro is a suburban rapid transit line serving the outer districts of Guangzhou, designed to provide fast regional connections between the city center and its northeastern outskirts.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Line 21 (Guangzhou Metro) canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9926550 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Line 21 (Guangzhou Metro) Context triple: [Line 3 (Guangzhou Metro), connectsWith, Line 21 (Guangzhou Metro)]
-
A.
Guangzhou Metro Line 2
Guangzhou Metro Line 2 is a major north–south rapid transit line in Guangzhou, China, connecting key railway hubs, commercial districts, and residential areas across the city.
-
B.
Line 18 of Guangzhou Metro
Line 18 of Guangzhou Metro is a high-speed rapid transit line in Guangzhou, China, designed to provide fast north–south connections between the city center and outlying districts.
-
C.
Guangzhou Metro Line 22
Guangzhou Metro Line 22 is a high-speed rapid transit line in Guangzhou designed to provide fast regional connections between major transport hubs and urban districts.
-
D.
Guangzhou Metro Line 5
Guangzhou Metro Line 5 is a major east–west rapid transit line in Guangzhou’s metro system, connecting key urban districts and serving as an important high-capacity commuter corridor.
-
E.
Guangzhou Metro Line 7
Guangzhou Metro Line 7 is a rapid transit line in Guangzhou’s metro system that connects key southern districts and transport hubs, including Guangzhou South Railway Station.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Line 21 (Guangzhou Metro) Target entity description: Line 21 of the Guangzhou Metro is a suburban rapid transit line serving the outer districts of Guangzhou, designed to provide fast regional connections between the city center and its northeastern outskirts.
-
A.
Guangzhou Metro Line 2
Guangzhou Metro Line 2 is a major north–south rapid transit line in Guangzhou, China, connecting key railway hubs, commercial districts, and residential areas across the city.
-
B.
Line 18 of Guangzhou Metro
Line 18 of Guangzhou Metro is a high-speed rapid transit line in Guangzhou, China, designed to provide fast north–south connections between the city center and outlying districts.
-
C.
Guangzhou Metro Line 22
Guangzhou Metro Line 22 is a high-speed rapid transit line in Guangzhou designed to provide fast regional connections between major transport hubs and urban districts.
-
D.
Guangzhou Metro Line 5
Guangzhou Metro Line 5 is a major east–west rapid transit line in Guangzhou’s metro system, connecting key urban districts and serving as an important high-capacity commuter corridor.
-
E.
Guangzhou Metro Line 7
Guangzhou Metro Line 7 is a rapid transit line in Guangzhou’s metro system that connects key southern districts and transport hubs, including Guangzhou South Railway Station.
- F. None of above. chosen
Statements (30)
| Predicate | Object |
|---|---|
| instanceOf |
metro line
ⓘ
suburban rail line ⓘ |
| category |
Guangzhou Metro lines
ⓘ
linked to:
Guangzhou Metro
Rail transport in Guangzhou ⓘ Suburban rail in China ⓘ |
| connects |
Guangzhou city center
ⓘ
linked to:
Guangzhou
northeastern outskirts of Guangzhou ⓘ |
| country | China ⓘ |
| designCharacteristic |
fast regional service
ⓘ
suburban rapid transit ⓘ |
| electrification | overhead line ⓘ |
| fareSystem | Guangzhou Metro fare system ⓘ |
| gauge | standard gauge ⓘ |
| locatedIn |
China
ⓘ
Guangdong Province ⓘ Guangzhou ⓘ |
| operator | Guangzhou Metro Group ⓘ |
| owner |
Guangzhou Municipal Government
ⓘ
linked to:
Guangzhou Municipal People’s Government
|
| partOf |
Guangzhou Metro network
ⓘ
linked to:
Guangzhou Metro
|
| purpose | provide fast regional connections between Guangzhou city center and northeastern outskirts ⓘ |
| regionServed |
northeastern Guangzhou
ⓘ
suburban Guangzhou ⓘ |
| rollingStockType | electric multiple units ⓘ |
| serviceArea |
city center–suburban corridor of Guangzhou
ⓘ
northeastern outskirts of Guangzhou ⓘ outer districts of Guangzhou ⓘ |
| servicePattern | regional express-oriented ⓘ |
| system | Guangzhou Metro ⓘ |
| ticketing | integrated with Guangzhou Metro ⓘ |
| transitType | rapid transit ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Line 21 (Guangzhou Metro) Description of subject: Line 21 of the Guangzhou Metro is a suburban rapid transit line serving the outer districts of Guangzhou, designed to provide fast regional connections between the city center and its northeastern outskirts.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Line 3